Group 1 - The core point of the article discusses the monitoring of stock index futures arbitrage as of June 6, highlighting the basis and monthly spread of various contracts [1] Group 2 - The basis for the CSI 300 IF2506 contract is at a discount of 18.58, the SSE 50 IH2506 contract at a discount of 15.25, the CSI 500 IC2506 contract at a discount of 36.68, and the CSI 1000 IM2506 contract at a discount of 52.64 [1] - The monthly spread for the CSI 300 IF2506-2507 is 37.4, for the SSE 50 IH2506-2507 is 30.8, for the CSI 500 IC2506-2507 is 70.4, and for the CSI 1000 IM2506-2507 is 94.0 [1]

2.月差：沪深300IF2506-2507价差为39.2，上证50IH2506-2507价差为30.2，中证500IC2506-2507价差为 68.8，中证1000IM2506-2507价差为91.2。 1.基差：沪深300 IF2506合约贴水26.34，上证50 IH2506合约贴水17.22，中证500 IC2506合约贴水 51.21，中证1000 IM2506合约贴水69.17； 6月4日股指期货套利监测日报 金十期货6月4日讯， ...

2.月差：沪深300IF2505-2506价差为35.6，上证50IH2505-2506价差为18.4，中证500IC2505-2506价差为 102.2，中证1000IM2505-2506价差为113.6。 5月14日股指期货套利监测日报 金十期货5月14日讯， 1.基差：沪深300 IF2505合约贴水0.21，上证50 IH2505合约升水2.22，中证500 IC2505合约升水0.88，中 证1000 IM2505合约贴水3.77； ...